Tallahasse flap jack 

A sex act consisting of taking a large healthy dump (perferrably liquid free) on your partners chest and then using the butt to flatten said dump into the shape of a flap jack.

I was feeling quite awry about life until Carl introduced me to the Tallahasse flap jack.

Tallahasse flap jack by Fecal Incident November 14, 2009

jumbo jack 

Another terrible invention of corperate america, a lousy damn sandwich. Though, it is one of the most entertaining sandwiches ever invented. IE, Ask any native american what that dollar sandwich is from jack in the box. native american would reply; A Yumbo Yack? Or there's always the mexican pronunciation; Humbo Hack. Equaly hillarious. If if your really lucky , you can get them to say "Yack in the box"

You; Hey, Chief running water, what do you want from jack in the box?

Chief running water; OH, Yack in the box? Get me a yumbo yack.

You; you mean jumbo jack LOLROFLCOPTERLMOAOMG

jumbo jack by captain awesome August 14, 2006

Miami Jack-in-the-Box 

A Miami-Jack-in-the-Box is when a guy takes a small cardboard box (like a jack-in-the-box) with a lid, cuts out the bottom, places his penis through it, has a girl open it with her mouth, and then she gives him a blow job.

There is no example for the Miami Jack-in-the-Box.

Miami Jack-in-the-Box by ladyguy63 March 13, 2009

Dont Jack the Dillys 

Dont F it up; Dont mess it up

Dude, dont jack the dillys bro

Dont Jack the Dillys by Patrick O'Shanahan June 5, 2009

Post-jack 

Hijacking someones facebook post with meaningless off-topic banter.

D: Q&A on ABC is awesome. Debate polly-ticians. Debate!

M: Mmm Polly-waffle

D: Did you just Post-jack?

Post-jack by Meshies May 17, 2010

Swapple Jack 

The act of stealing or copying another's swagger.

Derek wore high tops and a flat bill to school one day and billy came to school the next day with the same high tops and flat bill and totally swapple jacked Derek.

Bitch don't swapple jack me!

Yo asshole! You are majorly swapple jacking me!

Swapple Jack by Swapple Jackin' Stan March 20, 2011

Kahlua Jack 

Miniature Liquor bottles

Kyle grabbed 3 kahlua jacks on his lunch break and got schmammered.

Kahlua Jack by kyhoelismy October 14, 2011